Insulating cup sleeve



FIG. 1 is a top perspective view of an insulating cup sleeve showing thenew design;

FIG. 2 is a bottom perspective view of the insulating cup sleeve shownin FIG. 1; and,

FIG. 3 is a front elevation view of the insulating cup sleeve shown inFIG. 1. The surface pattern continues all the way around onto the right,rear and left sides of the insulating cup sleeve.

The features shown in broken lines depict environmental subject matteronly and form no part of the claimed design.

CLAIM The ornamental design for an insulating cup sleeve, as shown anddescribed.